Pipe-coupling.



A. T. HERRIUK.

PIPE UDULPLINGA APPLIOATIUN rum Nov 13, 1907.

921 ,247. Patented May 11, 1909.

Fig. F/ 2.

S 014; if. BY

M ATTORNEY motions.

UNITED STAT.

ES PATENT OFFICE.

PIPE-COUPLING.

nIlPllCGfiOll filed November 33, 190?.

apecifica tion of Letters Patent.

Patented ma 1 1, 1009.

Serial No. 401,994..

! {voting into tho :innuhir grooves is insulated lot h from the pipe sections and the collars.

To prcvcnt the ends of the pipe sections ithuttiug or to provcnt both sections orgitgin;: with the. slecvo :ind thus forming an electrical connoctii'in bctwecn the sections, there is provhlcil an annular ring 11 ooinposoil ol i i i v l [his invcntion rclntcs to 'pipc (ZOlllJllllfjH in u which thc HL'CllUJh urc insulator] onc lroin :inothcr. nnrl it has lor :in oh cct to provulo a Coupling of this type which is incxprnsivc to l mull nrclion thus preventing this section nnmul'iicl urn, nnple in operation and ilnrnhlo in use.

\Yith this and Mimi ohjort in vicw, tl-o invention consists in the parts nurl combination of parts hbrcinaitcr to hc (l((l'll)(tl Shown in the accompanying Lll'il\\'ili [h {UH .lnore particularly pointcilout in tin- :ippciulcrl claim in tho clranings, Figure l i u longitudinal wction of thc coupling uttnchcrl to two pipi- Fig. 2 is no end vii-w, :uirl l lg. 3 is n .sido clevntion.

The coupling shown C(JllilH'lbl two collars A and B. two packing rings 5, and n ronncr-tiu 'slccvo L. Each collar in l'orincil with no cnlnrgcd cylindrical horc l and no alincd clongntcrl tapering horc .2, tho n-rcnteht til-- :nneter of which is 1053* than thc dinnmtcr ol' the cylindrical horc to provide :t'shonlrlcr 3. F' (ii packing ring has n length groillg-r thou its collar, so as to project from tho curls of tho lotto! and i5 provtrh-(l with an annular roovo 5 at one and, :t liTI(ll'lC:'l,l horo (5 to it a pipc socl'ion, n cylindrical pcriphcrnl portion 7 to lit horc l, and u lupcring por'iphorul portion 5 to lit horc L, the g 'mitcst ha1ncterofthc hitter lwmg'h'sx lhnn tlic (li nmctcr of thc ovlnulriral pcriphcrnl portion insulit hn; nnttoriul and having an itnnulltr lhingr i3. 'lhiv ring extends around the end of muoi the sections in such manner as to cnusc the ilzingc 112 to project over the end of contactin with any metal of the coupling.

'8 insuhitc tho collars from tho pipc Hl'CllOIlt throughout tho lengths of tho colhirs nnrl that} tho projcctiiig portions of tho patching rings-prevent cvon tho mlroinc ciuls of tho collars being brought into contact with tho pi 6 sections by on uncvon drnwing of tho colars together. Fnrther the slocve pro- To litcilitittc lhc fitting of tho ring 11 onto thc suction and at the some time to prevent lhc ring being rcznovcd by l strong current through the coupling, thc sloevo C 1s prefernhly provided with. an internal annular ring. or shoulder 13 zigitinst which the ring lies. Sold riu r 13 is rigidly secured to the Sleeve C in sucii position as to adapt it to hold the insulating ring 11 securely against the end of one pipisection whilc maintaining said vshoulder out oicontact with tho end of the other pipe suction. r r

llcving thus ilcscrihcil my invention, what I claim :nul. ilcnirc lo scrnrc by Letters Patout, is:

1. Thu coinhiiunion with tho pipe-sections having :uljnccnt (ends to ho connected; of i1. colhir mounted on (Batch of sold pipesections, Slthl collar having it hora lnrgcrtl utn thc'but- SlllU rliainctcr of the pipe upon whicli'jtis illlilllllill; n inm-crnnlucting pn ckingrin" litling tho horn of tho colhir throughout rim filling the :IHtCO hclwccn the collar and tho pipe, Slthl ring having on annuh'tr groove in that cml iuljnccnt to thc olhcr section of pipc; it lhtngcil ring of non-conducting ma. lLl'ilLl cklciuling :LI'UllllLl l'hc edge of one. of thc pi wscclioiis; :uul a. slccvc mounted in tho :innuhtr groovcs of sold packing rings iLIHI pi with-(l with nu intcrior annulus for holding sniil lhtngml ring in position upon its pipc-sorl ion, Slllll annulus hcing so positionul in tho horo oli Hlhlll slccvc JLH to ho n'utintninul out of coulnri with tho other pipmsoction.

2. 'lhc comhinntion with tho niljuccnt ('ll'llS ol' nlinoil pipc-scctions'; of it collar niounlcil on (inch of said scciions, said collar lowing It horc larger than tho outside d'iumoter of thc pipe; an insulating packing ring ducting ring for filling tliu intcrvztl bvtwcon said annular lug and ono of the pipe mills. The foregoing specification signal Bradford this 25th day of January, -WU? AUSTIN "i. illiilii'llfflfl,

in presence of two witnesses CHARLES Con, W. '1. PAGE.

filling the space betwocn the pipe and the collar throughout the length of tho bore of said collar, said packing rings liming cimuliu' grooves in in; :Llljztt'filll ends llwrcol; it slot-W2 mountvd in mid groom-s, hltlll alcove having am annular lug projecting wmcon thv :i ljnucnt units of the pipe b'litli biid but out of contact lllUlUWllll; UJlLl is, Mn L-UOlk 

